Herrick, Samuel

1911 – 1974

• Astrodynamics
• Icarus and the variation of parameters
• "The astronomical unit" and the solar parallax
• Astrodynamics
• Differential expressions for low-eccentricity geocentric orbits
• Precision orbits and observation reduction
• Tables for rocket and comet orbits
• The determination of position from a photographic plate
• The Laplacian and Gaussian orbit methods